This website, created by David W. Stockburger, provides a basic explanation with diagrams of the one and two-tailed t-tests. The page does more than simply provide explanations of the test, but it actually compares the...

This is website, presented by Statistics Canada, examines the concept of non-probability sampling. It discusses types of non-probability sampling, differences between probability and non-probability sampling, and...

This site, created by author William M.K. Trochim, describes numerous methods of nonprobability sampling, including accidental, haphazard or convenience sampling and many other types of purposive methods. Some of these...

This applet illustrates probability using the game "Let's Make a Deal." As students play the game the computer keeps track of the wins and losses, asking students to make their own inferences about the probability of...

This goal of this resource is to aid in the understanding of the relationship between statistics and the scientific method and how it applies to psychology and the behavioral sciences. The learner will learn how to read...